-LRB- CNN -RRB- -- As he strained , crunched and lifted weights , the muscle panels surfaced from Jason Dinant 's stomach . Faintly at first , they emerged : one , two , three and four -- not yet a six-pack .

`` In the first three months , I saw such a fast improvement , now I 'm worried about plateauing , '' said Jason Dinant .

`` My bottom two abs have n't come in yet , '' he said .

Since January , Dinant , an iReporter , has tried to get six-pack abs in time for his 10-year high school reunion in June .

Dinant , a Las Vegas , Nevada , resident , is one of the three iReport contributors being followed by CNNhealth as they strive to meet diet and fitness goals they set at the beginning of the year . iReport.com : See the journey to change

Dinant wanted to whip his beanpole figure into muscular shape . He also wanted to display a healthier physique for his blog called `` Naked Boy News , '' where he stands shirtless to give what he calls `` the naked truth about today 's news . ''

And now the 27-year-old has another motivation .

Dinant will be a guest , riding in a chariot-style car for an `` ab-veil '' on June 28 for the Lesbian , Gay , Bisexual and Transgender Pride March in New York . His car is to be accompanied by rows of shirtless men who also have six-packs .

Dinant was invited because , the Naked Boy News is `` a very popular act , '' said Maurice Michaane , director of the event . `` People in the Northeast know him . ''

With the parade only two months away , Dinant said : `` Now I 'm in high drive . There 's no cheating on the diet . ''

To get in shape , he works out four to five days a week , performing a combination of core exercises , dumbbell curls and pull-ups . He jogs , does cardio exercises and works with a fitness trainer . To avoid looking like `` a toothpick with abs , '' he started lifting weights .

With a stringent diet and hours at the gym , the 6-foot-tall Dinant shrank from 160 to 143 pounds .

Losing weight is normal with all the exercising and dieting , said Robert Dothard , a personal trainer based in Atlanta , Georgia .

`` You ca n't see a six-pack through fat , '' Dinant said . `` Belly fat is the enemy . People reveal their ab muscles , but the nutrition and exercise are also formula for weight loss . ''

The key is to eat in increments , but it 's difficult for people with traditional , 9-to-5 jobs to eat something every two hours to maintain their weight , he said . Body builders try to offset the weight loss by consuming protein powders and supplements , Dothard said .

Dinant 's weight loss was completely unintentional . He said eating 16 egg whites and 1 1/4 pounds of chicken breasts every day gets old after three straight months .

`` It 's hard to eat that much protein , '' Dinant said . `` I started drinking this protein shake so I can get in all the calories and protein . ''

Compared with just four months ago , the `` man boobies '' and the extra layer of flab around his midsection have been lost , Dinant said . And there 's an even bigger benefit .

`` I 'm awake more . I 'm alert more and I have more energy , '' he said . `` I just feel better . My whole body has become healthier and better . ''

While pleased with the results , Dinant worried that with two-thirds of a six-pack , his body will begin to plateau .

`` Plateaus are really a mental thing , '' Dothard said . `` When that happens , people start going back to their own habits . So they end up cheating and binging . ''

If the body does n't respond to the workout anymore , more difficult exercises should be adopted .

`` Jason has to do something different or harder to maintain results to keep on the track that he 's on , '' Dothard said . `` It can be frustrating , especially when he is still working out and the body is not responding to the same thing . People work out 30-45 days and get tremendous results , then it slows down or stops . Nothing 's wrong . The body is adjusting to what you 're doing . ''

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Jason Dinant , an iReporter , has met two-thirds of his goal for six-pack abs

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Dinant getting in shape for high school reunion and gay pride parade

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Fitness trainer advises using more difficult exercises if body plateaus